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它的执行机构是危急遮断滑阀。
It is the executing agency Emergency Trip slide valve.
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pd f format横向滑阀蒸汽机计划的指示。
Horizontal Slide Valve Steam Engine plans with instructions in.
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pd f format横向滑阀蒸汽机计划的指示。
Horizontal Slide Valve Steam Engine plans with instructions in.
youdao